a few things to note:
Realself is notorious for removing bad reviews, and making good reviews more prevalent.
Being under anesthetic for 10 hours is a lot. theres new research showing that the impact it has on the body can be big, and bad.
If hes young, and has not performed hundreds of procedures, he may be nervous which will make his surgeries take longer. This can be seen as a good thing, as older more experienced surgeons are often numb to the procedures they specialize in, and can become careless in some cases (SEE MM.)
However, this is not to discredit him. Ive seen some good and bad reviews. ultimately its up to the patient to determine if hes right for them.
Edit: He has nearly 15 years experience.